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powerpc/mpc5xxx: add OF platform binding doc for FSL MSCAN devices

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This patch adds documentation for the MSCAN OF device bindings for
the MPC512x and moves the one for the MPC5200 to the new common file
"Documentation/powerpc/dts-bindings/fsl/can.txt".

Signed-off-by: Wolfgang Grandegger <wg@denx.de>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wolfgang Grandegger 2010-01-07 09:43:08 +00:00 committed by David S. Miller
parent bf3af54732
commit 959d20bfe8
2 changed files with 54 additions and 8 deletions
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53
Documentation/powerpc/dts-bindings/fsl/can.txt Normal file
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@ -0,0 +1,53 @@
CAN Device Tree Bindings
------------------------
(c) 2006-2009 Secret Lab Technologies Ltd
Grant Likely <grant.likely@secretlab.ca>
fsl,mpc5200-mscan nodes
-----------------------
In addition to the required compatible-, reg- and interrupt-properties, you can
also specify which clock source shall be used for the controller:
- fsl,mscan-clock-source : a string describing the clock source. Valid values
are: "ip" for ip bus clock
"ref" for reference clock (XTAL)
"ref" is default in case this property is not
present.
fsl,mpc5121-mscan nodes
-----------------------
In addition to the required compatible-, reg- and interrupt-properties, you can
also specify which clock source and divider shall be used for the controller:
- fsl,mscan-clock-source : a string describing the clock source. Valid values
are: "ip" for ip bus clock
"ref" for reference clock
"sys" for system clock
If this property is not present, an optimal CAN
clock source and frequency based on the system
clock will be selected. If this is not possible,
the reference clock will be used.
- fsl,mscan-clock-divider: for the reference and system clock, an additional
clock divider can be specified. By default, a
value of 1 is used.
Note that the MPC5121 Rev. 1 processor is not supported.
Examples:
can@1300 {
compatible = "fsl,mpc5121-mscan";
interrupts = <12 0x8>;
interrupt-parent = <&ipic>;
reg = <0x1300 0x80>;
};
can@1380 {
compatible = "fsl,mpc5121-mscan";
interrupts = <13 0x8>;
interrupt-parent = <&ipic>;
reg = <0x1380 0x80>;
fsl,mscan-clock-source = "ref";
fsl,mscan-clock-divider = <3>;
};

9
Documentation/powerpc/dts-bindings/fsl/mpc5200.txt
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@ -195,11 +195,4 @@ External interrupts:
fsl,mpc5200-mscan nodes
-----------------------
In addition to the required compatible-, reg- and interrupt-properites, you can
also specify which clock source shall be used for the controller:
- fsl,mscan-clock-source- a string describing the clock source. Valid values
are: "ip" for ip bus clock
"ref" for reference clock (XTAL)
"ref" is default in case this property is not
present.
See file can.txt in this directory.